Journal-bearing.



No. 788,320. PATENTED APR. 25, 1905.

` H. V. KUHLMAN. v

JOURNAL BEARING.

APPLICATION FILED MAR. 14,1904.

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No. 788,320. PATBNTBD APR. 25, 1905. H. V. KUHLMAN.

JOURNAL BEARING.k

APPLIQATION FILED MAB. 14,1904.

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PATENTED APR. 25, 1905. kH. V. KUHLMAN. JOURNAL BEARING.

APPLIoATmN FILED MAB. 14,1904.

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UNITED STATES HENRY V. KHLMAN, OF CHICAGO,

Patented April 25, 1905.

ILLINOIS, AssIeNoR oF ONE-HALE TO GEORGE A. WTOODMAN, yOF CHICAGO,ILLINOIS.

.JOURNAL-BEARING.

SPECIFICATION forming part of Letters Patent No. 788,320, dated April25, 1905.

Application filed March 14, 1904. Serial No. 197,956.

To all whom it may concern:

Be it known that I, HENRY V. KUIILMAN, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Journal-Bearings, ofwhich the following is 'a speciiication. Y

This invention relates to that class of journal-bearings which isespecially adapted for car-axle bearings, and its object is to provide adurable and inexpensive bearing made in two parts which are. preventedfrom moving relatively and are so constructed that the wearing portioncan be easily and quickly replaced as the demands oil Service require.l

In the accompanying drawings I have shown several ways of embodying theinvention, and, referring thereto, Figure 1V is a sectional View of abearing containing my invention and taken on the line 1 1 of Fig. 2.Fig. 2 is a sectional view on the line 2 2 of Fig. 1. Fig. 3 is asectional view similar to Fig. 1 and showing another embodiment of theinvention. Fig. 4 is a sectional view similar to Fig. 1 and showinganother embodiment of the invention. Fig'. 5 is a perspective view ofthe back of the bearing shown in Fig. 4. Fig. 6 is a perspective view ofthe brass shown in Fig. 4. Fig. 7 is a longitudinal sectional view ofabearing composed of the back and brass shown in Figs. 8 and 9. Fig. 8 isa plan view of the under side of the back, and Fig. 9 is a plan view ofthe top of the brass of the bearing shown in Fig. 7.

Referring to the drawings, 5 designates the back, which is made ofmalleable iron or other tough metal, and 6 is the brass or wearingportion of the bearing, which is preferably provided with a lining 7 ofBabbitt metal. The back is polygonal in shape with a fiat top 8 andinclined sides 9, and the brass is shaped correspondingly to lit snuglyinto the back.

To prevent relative longitudinal movement of the brass and the back, Iprovide one of the parts with recesses in which projections on the otherpart tit snugly. In Figs. 1 and 2 I have shown the brass provided withrecesses 10 to receive transversely-arranged projections 11 on the upperside of the back, and it will be observed that this construction of theback and brassA provides recesses 12 in the 50 back between theprojections 11 to receive the projections 13 on the brass between therecesses 10, thus making an interlocking engagement of the back andbrass throughout its length by snugly-interfitting projectionsalternately provided on the back and the brass. The projections may bevariously arranged, and I have shown continuous projections 14: in Fig.3 extending transversely across the under side of the top and sides ofthe back 18 60 to lit snugly in corresponding recesses 15 in the brass16. In Figs. 4, 5, and 6 I have shown diamond-shaped projections 19 onthe inclined sides 2O of the back 2l to iit snugly in complementaryrecesses 22 in the sides 23 65 of the brass 211, and in Figs. 7 to 9 Ihave shown projections 25 on the under side of the fiat top 26 of thewedge 27 to lit snugly in complementary recesses 28 in the iiat top 29of the brass 30. It is obvious that the construction 7o shown in Figs. 4to 6 ,can be combined with the construction shown in Figs. 7 to 9 tomake a bearing in which the back is provided with projections on theunder side of its sides and top to fit snugly in complementary recessesin the sides and top of the brass. The back is imperforate, and theprojections and recesses in the back and brass need be only ofsu'flicient size to provide an interlocking engagement ofthe parts toprevent relative end- 8O wise movement. The projections may, of course,be provided on the brass and 'the recesses in the wedge, it' desired.

The invention can be embodied in bearings of other sizes, shapes, andcharacteristics of detail than those'illustrated, and it will beunderstood that the particular form of bearing illustrated in thedrawings is employed for convenience only in explaining the inventionand that the projections may be otherwise formed and arranged to preventendwise movement of the back and brass without being fastened together.

My improved two-part bearing is approximately of the same size as anordinary solid bearing, and the brass or wearing part will by thedifference in weight between a solid bearing and my brass, whichcorresponds approximately to the weight of the back, which does notrequire to be renewed. It will be further observed that with my improvedbearing the weight of brass consigned to the scrap will be considerablyless than in the case of a solid brass bearing, and the cost of bearingsis in this respect greatly reduced.

The parts of my improved bearing are interlocked against relativesidewise movement by the polygonal shape of the parts, which snugly iitone Within the other and by the projections on one part fitting snuglyin the recesses in the other part and against relative end wise movementby said projections, so that the two parts of the bearing are rigidlyseated one upon the other and locked in service against relativemovement without at any time being fastened together. This permits thebrasses to be easily and quickly replaced at any time without requiringthe breaking or unfastening of any parts, and thus eliminates all dangerof injuring the wedge and saves the time and labor of separating theparts when fastened together.

Without limiting myself to the exact construction and arrangement ofparts herein shown and described, what I claim, and desire to secure byLetters Patent, is-

1. A two-part brass for a journal-bearing comprising an imperforatetough-metal back of polygonal shape having a fiat top and inclined sidesto it a wedge, a wearing part shaped accordingly to fit snugly into theback, there being projections on one part to lit snugly in recesses inthe other part, said parts not being fastened together but interlockedagainst relative sidewise movement by the polygonal shape of the partsand the projections and against relative endwise movement by saidprojections.

2. Atwo-part brass for a journal-bearing comprising an imperforatetough-metal back of polygonal shape having a Hat top and inclined sidesto lit a wedge, a wearing part 4shaped accordingly to fit snugly intothe back,

there being projections on the inclined sides of one part to fit snuglyin complementary recesses in the inclined sides of the other part, saidparts not being fastened together butinterlocked against relativesidewise movement by the polygonal shape of the parts and theprojections and against relative endwise movement by said projections.

HENRY V. KUHLMAN.

Witnesses:

WM. O. BELT, PAUL SCHMECHEL.

